Interlocking and signal mechanism for liquid dispensers



Feb. 18, 1930. L. R. HARTLEY 1,747,510

INTERLOCKING AND SIGNAL MECHANISM FOR LIQUID DISPENSERS Filed April 17, 1926 6 Sheets-Sheet 1 Feb. 18, 1930.

1.. R. HARTLEY INTERLQCKING AND SIGNAL MECHANISM FOR LIQUID DISPENSERS Filed April 17. 1926 6 Sheets-Sheet I 2 Feb. 18, 1930. L. R. HARTLEY INTERLOCKING AND SIGNAL MECHANISM FOR LIQUID DISPENSERS Filed April 17. 1926 6 Sheets-Sheet 3 Feb. 18, 1930. L. R. HARTLEY I 1,747,510

INTERLOCKING AND SIGNAL MECHANISM FOR LIQUID DISPENSERS Filed April 17. 1926 e sheets-sheet 4 Willi/[111112 L. R. HARTLEY INTERLOCKING AND SIGNAL MECHANISM FOR LIQUID DISPENSERS Feb. 18, 1930.

' Filed April 17, 1926 6 Sheets-Sheet 5 u m/ a w Feb. 18, 1930. L. R. HARTLEY 1.747.510

INTERLOCKING AND SIGNAL MECHANISM FOR LIQUID DISPENSERS Filed April 1.7, 1926 6 Sheets-Sheet 6 Patented Feb. 18, 1 930 Parent LEE R. HARTLEY, OF FORT WAYNE, INDIANA, ASS TGNOR TO S. F. BOWSER 86 COMPANY,-

INC., OF FUBT WAYNE, INDIANA, A CORPORATION OF INDIANA INTERLOCKING Ann srenen iirnci-ranisiir non. LIQUID DISPENSERS Application filed April 17,

This invention relates to dispensing devices for gasoline or other liquids, and has for one of its objects the provision of interlocking and signal mechanism to insure honest measurement and to automatically inform the purchaser of the condition of the dispens- -ing mechanism.

A further object is to provide a dispensing device having interlocking and signal mechanism of improved construction andoperation.

The invention is exemplified in the combination and arrangement of parts shown in the accompanying drawings and described in the following specification, and it is more particularly pointed out in the appended claims.

In the drawings- Fig. 1 is an elevation of a liquid dispenser to which the present invention is applicable;

Fig; 2 is a vertical section substantially on line 2-2 of Fig. 1;

Fig. 3 is a vertical section on line 3-3 of Fig. 2; Fig. 4 is a vertical section on line 4-4 of Fig. 1; i

Fig.- 5 is a vertical section on line 5-5 of Fig. 4;

Fig. 6 is a horizontal section on line 6-6 of Fig. 3;

Fig. 7 is a vertical section on line 7-7 of Fig. 6;

Fig. 8 is a vertical section on'line 8-8 of Fig. 6; Fig". 9is a'horizontal section on line 9-9 of Fig. 7;v

Fig. 10 is a vertical section on line 10-10 of Fig. 2;

Fig. 11 is a vertical section on line 11-11 of Fig. 1;

Fig. 12 is a of Fig. 3;

Fig. 13 is a fragmentary elevation on line 13-13 of Fig. 8;

Fig. 14 is a vertical section on line 14-14 of Fig. 13; and

Fig. 15 is a horizontal section on line 15-15 of Fig. 5.

The dispensing device, as shown in Fig. 1, is provided with a transparent measuring horizontal section on line 12-12 1926. Serial No. 102,661.

receptacle or tank 20 carried upon a support- '-ing pedestal 21. An overflow pipe 22 eX- tends into the tank 20 and fixes the upper surface level of the, liquid in the tank. The

the amount of liquid in the tank at any time.

The tank 20 is formed by a glass cylinder 24 which is, seated upon a base casting 25 and made liquid-tight by a suitable sealing means 26. The overflow pipe 22 communicates through a port in the base casting 25 with a i return pipe 27. The lower end 01": the return pipe 27 (Fig. 7) is connected through a valve casing 28 with a pipe 29 by which liquid is conducted through the valve casing 28 back to an underground storage tank or other source of supply. It will be seen 'from Fig. 7 that the return pipe 27 has free communication at all times through the valve casing 28 and pip 29 with the storage tank.

As shown in Fig. 10, a discharge pipe 30 extends through a packing gland 31 connected with the base casting 25, the upper end'of the. pipe 30 opening into the interior of the tank 20. A chamber 32 surrounds the pipe 30 below the packing gland 31'and a connection 33 communicates with the chamber 32 at its inner end and with the filling hose 34 at its outer end. A valve 35 is interposed in the connection 33 andis controlled by-a finger lever 36. A casing 37 extends downwardly 7 from the chamber 32 and surrounds the pipe 30; the casing being spaced outwardly from the pipe, as shown in Fig. 10. z

The lower end of the casing 37 as shown in Fig. 7, communicates with the valve casing 28. A valve 38 is disposed in the valve casing 28 andis normally closed by aspring 39. against a valve seat 40to separate the "space between the lower end of the casing 37 and the chamber with which the return-pipes V 27 and 29 communicate. The valve 38 and spring '39 are held in place by a removable cap 41 threaded into the valve casing 28. The discharge pipe 30 extends into the space within the valve casing 28 and is provided with openings 42 and 43 communicating with the interior of the valve casing 28. A rod 44 is connected to the lower end of the pipe 30 and extends througha packing gland 45. A lever 46 is pivoted at 47 within the valve casing 28 and'is provided with'bifurcations 49 underlying a'fiange 50 on the rod 44. The

opposite end, of the lever 46 is-provided with bifurcations 51 which engage the valve 38.

. YVhen-thepipe30 is in its lowermost position indicated in Fig. 7', the lever46 Will be held in the position shown in that figure to ,..';0p.en the Valve 38, for purposes to be ex-' plained.

The lower end'of the rod as shown in; Figs.'4,-5 and 15,'is secured to a yoke 52 which is sli'dably mounted on a fixed guide rod 53. f

A rack bar 54 is also connected at its lower end to the yoke 52 so that'the rack bar and v lrod'44f are constrained to move vertically in .unisonwith each other. 'Therack bar 54,'as 1' 20.:

i "cured to a sleeve 56 journaledonja p1n57 which is carried on the valve housing 28-; A crank 58, isattachedto the outer end of the shown in Fig. v8,"meshe's with a pinion'55 lsesleeve 56Jandis positioned outside ofthe ped-' estal 21, as shown in Figs. 1 and 8.- By roftationof the crank 58 the rack54 may be raised and lowered and consequently the rod 44 and the pipe will be'correspondingly raised and lowered; A vertical stop bar 59 is journaledj for rotationwithin the pedestal 21 and carries-adjustable stops 60 spaced longitudinally of the bar and displaced angu- Y larly relative toone another; The yoke 52 is I provided with a stopfin'ger 61 arranged to contact with the stops 60'when these stops are rotated into the path ofmovement of the V "stopvfinger. ,Astopplate 62 iscarried near the bottom of the bar 59 and is provided with vertical guideway therein registering with ment solong as the stop finger 61 isin the "guidewayof the guide. 63. The lowermost" stop 60 is also mountedonthe stop plate 62.

.Tlie bar 59 be rotated by means of bevieledgears64 and av hand-wheel 65. An, 111-,

76:5 toishow-whichofthe stopsz6O is disposed in the path of movement ofthestop finger 61.

,dex dial'66 is connected with the hand-wheel 7 As will be hereinafter-more particularlyre- ,ferred to the; dial 66 is provided with av notched: flange "67 for "engaging a tongue 68 3 fixed on the pedestal 21 to accurately locate thestops '60 in the path of the finger 61. A spring 69yieldingly holds the notched flange 67in contact with the tongue 68.

' upper end of the rack 54, as shown" in Figs. 3,6, 8, 13 and 14, extends throughan opening in an interlocking yoke 70. a A plate 71'is mounted to slide in guides 72 formed :3

on'the yoke 70. A pin 73 extends through the upper end of the rack 54 and overlies the. top edge of the yoke and sliding plate? 1.

A rod 74 is fixed tothe yoke 70 at itslower end and. at its upper end is pivotally con nested at 75 to a lever arm 7 6 pivotally mounted on the pipe connection 33 and constrained by a tooth 76 shown in Fig. 3 to rotate thereon inun'ison with the valve lever 36. The le-- ver arm 76 is provided with, an oppositely projecting arm 7 7 connected bya'l'ink 78 with an indicator-7 9 pivotally mounted at 80 Jon the cross-member 80 7 When the indicator, H 7 9 is inits uppermost or neutral position it will be, concealed bya-bar 81 formed as a part of and disposed across the;v frame 81" which is secured ,to the casing by'bolts or the like 82. A second indicato'r82 is also'pivoted at 80 onthe pedestal and is connected by a i link 83 with ears 84 on the slide plate 71. s

The link83, asshown in Figs. Band 14, is V nuts85 for adjustin'g the linkand slide plate; V relative to each other. A spring 86'surrounds threaded at its lower end and is provided with the link 83 and rests upona bracket 87 secured to the pedestahhousingh The upper end of the .spring 86 bears-upon a pin 88 carried by the link83 and resiliently pushes the link upwardly to swing the pointer 82 into a position in the rear ofthe concealing plate 81. When the rack 54 is in itslowermost position, however, thepin 73' engaging the top edge of the slide-plate? 1 will hold thelink 83 downward in opposition to the spring 86 and retain thepointer 82 in the. position shown in Fig. 2. It will be noted that in this position the pointer indicates the words char e tocar or e uivalent words; 7

30will also. be lowered and the valve 3 8will b'eopene'd,,as shown in Fig. 7. f" Thisprovides 'free communication from the'bottom of the Discharge to tank? or an equivalentlegend,

on a plate 89 projecting from thehous'ing 21 adjacent thepathof the pointer. The plate, 89 at its lower end carries the legend .Dis-

It will be noted thatwhen the rack 54' is in J its lowermost positiontherod 44 and the pipe tank 20 through the 'pipe 30, valve 38,and-;;w

pipe 29 to the underground storage tankf By lowering the, rack 54,.the valve 38is opened and the lower position of the rackfalso're-f tains the pointer 82in the position shown in Fig. 2through the action of the link83,slide' plate 71, and pin 73. TQis i's'the normal po-* sition of the 'parts'when'not in use. When the operator wishes to supply a quantity of gasoline to a custome'rhe first] turns the crank 58 to raise the rack 54. Upon the initial upward movement ofthe rack 54 the lever '46 will be released and the spring '39 will close the valve 38. At the same time the-slide'plate 71 willibe released by the pin and the spring 86 will expand tomove the pointer 82 downwardly so that the pointer will no longer indicate discharge to tank. The operator will continue to raise the rack 54 until the stop finger 61 engages an upper limit stop 90 mounted on the rod 53. This stop is preferably located to arrest the upward movement of the pipe 30 in a position in which the upper end of the pipe will be slightly below the top of the overflow pipe 22. The arrangement and location of the stop 90in Fig. 4 is for U. S. measurements whereas for Imperial measurement, the stop 90 will be positioned atthe top of the bar 59, as shown in Fig. 5. The number of quantity stops 60 are the same for both U. S. and Imperial measurements but the stops .60 for U. S. measurement are spaced closer together 'which would make the stop 90 for the U. S.

measurements. much lower than for the Imperial measurements. This accounts for the different positions ofthe stop 90in Figs. 4 and 5. The tank is then filled by means of pumping mechanism, not shown, the level to which the liquid rises being determined by the top. of the overflow pipe 22. As the liquid rises inthe tank it enters and fills the discharge pipe 30, surrounding casing 37 and chamber 32 through small openings 30 drilled through the pipe in position to be located just above the packing gland 31 when the discharge pipe is in its uppermost position. This avoids any possibility of shortmeasure by failure to fill the discharge pipe before gasoline is drawn from the measuring chamber; After the measuring chamber is completely filled the hand-wheel ispulled outward against the resistance. of the spring 69'and then rotated until the dial indicates the number of gallons that the customer wishes. At this time the wheel is released and the tongue 68-seats in one of the notches of thefinger 67 and holds the dial and bar 59 against rotation. This will bring the proper stop 60 into the path of the stop finger 61'. The rack-is then lowered until it isarrested by the engagement of the stop finger 61- with the selected stop. After the discharge pipe has thus been properly set the valvelever 36 is moved to open the valve and permit the liquid to flow from the tank through the discharge hose 34 to the customers car or other receptacle. As'so'on. as'

the valve is opened inthe pipe, connection 33 the liquid will drain from the tank'through the discharge pipe 30, the-casing 37,. the chamber 32, and'pipe connection 33 to the dischargehose. Theliquid will continue to discharge until'the surface level reaches the top of the pipe 30, thus discharging the quantity" determined by the position of the pipe as fixed by the stop 60. To prevent siphoning,. the fitting for the hose 34 is equipped with. an air vent to atmosphere. llhe chamber-32 may also be'providedwith' a vent, pipe extending into the glass-"cylin- .de-r' 20; As soon as the valve lever 36- isoperated to open the valve, the indicator 79 will be swung downwardly to point to the legend Discharge to car and will remain in this position so long as the valve is kept open. After the measured quantity of liquid has drained to the car the valve 36 is closed,

which will return the indicator 79 to its hidden position.

At night or when the station is closed the I dial 66 is rotated to bring the notch in the plate 62 in registration with the stop finger 61. The dial maybe provided with suitable cause the pin 73 to re-engagethe slide plate 1 I 71 and return the indicator 82'to the position shown in Fig. 2. At the same time the flange 50 on the rod 44 will engage the lever 46 and open the valve 38 to permit all of the liquid remaining in the tank to be drained back into the storage reservoir.

, It will be seen that signal mechanism isprovidedinterlocked with the operating mechanism so that the customer is clearly informed as to the operation of the various parts. The valve for returning the liquid from the tank to the storage reservoir is controlled by the measuring slide pipe-and may be openedonly by retracting: the pipe beyond the extreme measuring position, andwhen so opened the signal device'is automatically operated to indicatethat the parts-:areset to return the liquid: to the storage. reservoir. The valve for supplying the customer is also interlocked with the: return valve in such mannerthat the return valve cannot'be opened while thevalvc for supplying the customer is opened. So long as the customers valve is opened the yoke is'in its raised position andint'erceptsthe pin 73 to prevent the-rack being lowered a sufiicientdistanc'e to open the return valve. This valve can only be opened after the dial is properly set and after thevalve through which thel custome'r issupplied, is closed. In

this way the customer is assured of'the prop 2* quantityof liquid andby meansofthe signal mechanism connected with the interlocking arrangement he is at all times definitely informed. as to the position 'of the operating mechanism.

Iclaim: i 1. Dispensing apparatus comprising a measuring tank, a vertically adjustable dischargepipe' communicating with said tank-,a dispensing valve for controlling the fiow of liquid through said discharge pipe'to a-customer, a signal device connected with said valve" for indicating the position thereof. means for raising and lowering said- ,dis-; charge pipe; and: meanscomprisinga detent 45 v V series of 'quantitystops corresponding'lto the divi or holding said dispensing valve in its closed ,position when said discharge pipe is in its lowermost position.

2. l Dispensing apparatus comprising a measurin'gitank, arvertically adjustable "discharge pipe communicating with said tank, a dispensing valve'for controlling the flow of liquid through saiddischarge pipe to a customer, a drain valve for controlling the flOW' ofliquidirom said measuring tank to a stor- ,agegreservoir, operating mechanism for raising and lowering said discharge pipe, means for-automatically opening said drain valve i 3; Liquid dispensing apparatus comp'ris- Ivvhensaidv discharge pipe is moved to its low' Iermost position, and a detent connected with "said operating mech'anism'ior holding said dispensing valve in closed position "when said discharge pipe isin its lowermostposition.

ing a -measuring tank, a discharge pipearranged to slideverticallythrough the bottom of said tank, and a discharge conduit for recgei'vingliquid from said discharge pipe, said discharge pipelhaving an opening through the wall thereof disposed-within said measuring tank when said dlschargeplpels 1n 1ts uppermost position of'adjustment.

I he. Dispensing apparatus comprising a measuring tank, a discharge pipe arranged to slide vertically throughthe bottom ofsaid tank and having the upper end thereof open,

' a packing gland surrounding said pip'e'at the point where it passes through the bottom of ",ber,"said pipe having an opening through justable discharge'pipe for conducting meas; 7

said, tank, a receiving chamber surrounding the lower end of said cpipe,'and a discharge conduit connected 7 with said receiving chamthe wall v thereof in position to, be disposed above said packing gland but closely adjacent the bottomofsaid tankwhen said discharge pipe is'in its uppermost position, i I

5. In liquid dispensing apparatus, the-combination-witha measuring tank, of an adured quantities of liquid from said tank, a

variousquantities to becdispensed in accordance with the adjusted 'positioniof said disn charge pipe, means for settingthe quantity stops, avalve for-control1ing;,-the return of liquid from said jtanklto, a storagereservoir, 7 means operated by -means of said discharge.

--pi pe forppening said valve, and mechanism" cooperatingwith said-quantity stops for preventingtheopening of said valve-when any;

7 of said' quantity stops: are in 'oper'ativeposi-v 'ti0n. "f

"ing'jagmeasuring tank, adjustable means for discharging 1 measured 5 quantities of liquid V p 6. Liquid dispensing apparatus comprisfrom saidxtank, afseries of quantitystops cooperating with said adjustable *means to' l0- cate the latter in predetermined positions, an

' index dial, a hand Wheel for operating said index 7 dial andpositioning said quantity 7 stops, a drain valve for said ta'nk, means up;

between saidadjustablemeans and said quans tit-y stops forcompelling said index wheel fore said adj ustable' rneans can be'moved to a erated said adjustable means foropeningr saiddrain valve, and interlocking mechanism "m to be moved to a predetermined position bev position where it will open said drain valve.

8. Liquid dispensing apparatus compris ing a measuring tank, a vertically 'a-djustable pipe iordischarging measured quantities of liquid from said, tank, a'serieso f quantity stops for positioning said discharge' pipe, a

drain valve'for said pipe, means operated by said discharge pipe for opening said drain valve when said pipe is moved beyond its-discharge positions as'determined by said quantity stops, and interlocking mechanism comprising alimit stop associated with said quantitystops tor 'preventingthe opening of said" drain valve except when said quantity stops r are in a predetermined position.

i 9. Liquid dispensing{apparatus comprising a measuring container, a'discharge pipe having a liquid-tightsliding connection with said container, means for vertically adjusting said pipethrough'said'connection, stops for positioning said pipeat various heights to permitdischarge of predetermined quantities of liquid from said'containefl ineans forconducting liquid from said] container to be supplied to acustomer, a dra-in valverc'omcontainer, means controlled bysaid pipe for opening said drain valve, and mechanism comprising a'notched "stop plate assoc ated "munic'ating with the lower portion of said with said first-named stops-to prevent 'movement o f'said pipe to a position where the drain valve will be open except when said stop plate is in a predetermined position. 10. Liquid dispensing apparatus comprising a measuring tank, avertically adj-ustable pipe for discharging liquid from said tank,

means comprising a valve for dispensing liq-l uid from said measur ng tank,a drain valve" for returnlng the l1qu1d fro1n'sa1d,measur'- ing tank to-a'supply reservoir, means controlled by said pipe for opening said drain" valve when said'pipevis moved'to a'prede termined position, means compr sing a series of quantity stops for 'p'redetermining the various positionsof said discharge'pipe for dispensing predetermined quantities of liquid from said measuring tank, andmeansas sociated with said quantity stops ,Ifor" preventing the opening of said drain valve except when the quantity stops are in a predetermined position and preventing movement of said quantity stops until after the drain valve has been reclosed.

11. Liquid dispensing apparatus comprising a measuring tank, a vertically adjustable pipe for discharging liquid from said tank, a series of spirally arranged stops for locating said pipe to predetermine the quantity of liquid to be drawn by said pipe from said tank, a manually operated dispensing valve forcont'rolling flow of liquid from said tank to be supplied to a customer, a drain valve for returning liquid from said tank to a supply reservoir, and interlocking mechanism between said dispensing valve and said drain valve to prevent the manual opening of said dispensing valve whensaid drain valve is open.

12. Liquid dispensing apparatus comprising a manually operated dispensing valve for controlling dispensing of liquid, an indicating pointer, a screen for said pointer when said valve is closed, an indicating. plate having thereon a designation'as to discharge of liquid from the dispensing. apparatus, and connections between said valve and said pointer for moving the latter from behind said screen to a position where it willv point to the designation on said plate when said valve is opened.

13. Dispensing apparatus comprising a visible measuring vessel, means for control- 5 ling the dispensing of liquid from said visible measuring vessel, mechanism for predetermining the quantity of liquid to be dispensed from said measuring vessel, a drain valve for. controlling return of liquid from 40 said measuring vessel to a supply reservoir, mechanism for visibly indicating the dis charge of liquid from said measuring vessel during a dispensing operation, and additional 7 mechanism for visibly indicating the draining of said measuring vessel to said supply reservoir while said drain valve is open..

14. Dispensing .apparatus comprising a measuring tank, and an adjustable discharge pipe having an intake openingin its upper end, said pipe having an additional opening in its lower portion in communication with the interior ofsaid tank to efiect filling of said pipe with liquid when liquid'i's flowed into said tank.

15. Dispensing apparatus comprising a visible measuring tank, a gauge pipe with its upper end open, and means for adjusting" the elevation of the upper open end of said pipe,

. said pipe having an opening through its wall 60" said tank when said pipe is in its uppermost in position to be disposed above the bottom of position to effect flow of liquid into said pipe when flowing intosaid tank.

. 16. Dispensing apparatus comprising a visible measuring vessel, an open ended tube' projecting'upwardly into said vessel, means for adjusting the elevation of such open end in accordance with the quantity of liquid to be dispensed from said vessel, means for controlling the fiow from said vessel throughsaid vation in the liquid filling said vessel, and

means for limiting the uppermost position of said tube where perforations in the lower portion thereof will establish communication :13 tube after the latter has been lowered in ele-' between said vessel and the interior of said tube to fill the latter as the vessel is being I 18. In dispensing apparatus, the combination with. a visible measuring tank, of a gauge tube extending into the same, means comprising a vertically movable bar for adjusting the elevation of said gauge tube, a valve for controlling the dispensing of liquid from said measuring tank, a lever connected to said valve, a link suspended from said lever, a cross piece suspended from the lower end of said link and mounted for sliding movement said bar above said cross piece in position to engage the latter and hold said link and lever down to hold said valve closed when said bar and said gauge tube are in their lowermost positions.

19. In dispensing apparatus, the combination with dispensing mechanism, of means comprising a vertical bar for draining sa d dlspensing mechanism, means comprising a pivoted indicating pointer for visually indiover said bar, and a detent at the upper end of eatin the drainin of said dis ensin 1 mechanism, a link suspended from said pivoted pointer, a cross piece suspended from the lower end of said link and slidable over said bar, and a detent at the upper'end of said bar for engaging said cross piece to depress.

an additional link suspendedfrom said lever, aly'oke suspended from said additional link, a cross piecesuspended from said first-named link and mounted to slide verticallyiin saidl yoke, a detent at thetop or said bar inLposi-v ition to engage the top of said yoke and also holding-the top of the cross piece above the the top of said cross piece, and a spring for I top of the yoke and for urging the first-named jtent at' thetop 01" saidbar when thelatter is pointer toward itsinitial position, said clemoveddown acting toengage said cross piece 'I 20 i ing a measuring tank, a'vertically adjustable i chargingmeasured quantities of liquid therefrom, means compris ng a series of spaced plpe' at different positions off adjustment thereof, sai'dcpipe belng movable to its lower toward'its to'effect movement or said first-named pointer 7 1 to a position Where it indicates that the dispensing mechanism is being. drained, andzsaid detent',-by engaging said yoke, acting to hold said second-named pointer against movement position for indlcating dispensing of liquid. I r

21. Liquid dispensing apparatus'compris pi e c mmunicating with said tank fordis quantity stops for arresting said discharge '1 most position beyond the low'e'stpositionfixed ,by said quantity stops, a drain valve for said tafnk,means for automatically openingsaid "1 drain'ivalve when said pipe (is moved to its i lowermost, position, and means for preventing said; pipe from being moved to its lowermost position except when said quantity stops arein 'apredetermined position. I H "'22. Liquid dispensing apparatus comprise ing a measuring vessel, a discharge pipe having its upper end openln'g into said vessel, a dra n valve connected to the lower end of said -ing a measuringtank, a vertically adjustable:

I pipe for, receiving liquid from said tank, means for adjusting the height of said pipe for predetermining the quantity of liquid to be. dispensed from said tank, a -man'ually operated dispensing valve separate and independent 'from'said adjusting means, a drain valve "for controlling the return of liquid; from said'tankto a supply reservoir, and in-' terlocking mechanism between said adj usting means and said dispensing jvalve' comprising a link connected to saiddispensing 'valve andhpositively pulled by said "adj ust-- ing means when said drain valve is open.

f 24 Liquid dispensing apparatus compris 'ing a measuring tank, a vertically adjustable pipe for receiving liquid from'jsaid 'tank,--

means foradjusting said pipe to predeter-' mine the quantity of liquid to be discharged from said tank, a drain valve forficontrolling' return of saidliquid throughjsaid pipe, a

manually operable dispensingvalve-separate I V and independentofsaid adjusting means, and

interlocking mechanismbetween said adj usting means and said dispensing-valve comprising a link and a lost motion connection between-said adjusting means andsaid link to permit free operation of said dispensing valve When said drain valve'is closed but-positively actuating said linkto close said dispensing valve and hold the same closed, when said drain valve is opened.

'25. In dispensing apparatus thecombinae tion with a measuring tank, of'an adjustable discharge pipe extending into said tank,- means comprising a verticallymovable bar for adjusting the height of said discharge; I

pipefa stop finger securedto said barand movable up and down therewith, a series or" quantity stops, a vertical pivoted rod for carryingsaid quantity stops, means for re; I turning said rod to shift one of said quanti-f ty. stops to a position below and in vertical alinement with said stop finger, a stopplate secured to the lower portion of said rod, a

vertical guide iregistering with a slot inthe at I periphery of said stop platein position toreceive said finger when said rod is turned to a position wherenone ofsald' quantlty stops is in vertical alinement therewith, and I a fixed abutment invertical alinementwith said stop guideway. I 7 r I 26. Indispensing apparatus, the combination with ameasuring vessel, of a discharge pipe mounted therein foradjustmentin elevation, means comprising a vertical barlfor fingerwhenthe latter is said adjusting the elevation of saidpipe, astop I finger on saidbanmeans comprislng a series of quant ty. stops to co-operate with: said stop fin'ger to predetermine the iposition of said pipe, locking mechanism adapted to cooperate with said stop finger "to prevent movement of said quantity stops whenithe latter areadjusted to positions where none of them are in vertical alinement withsaid lstop fingenand a fixed abutment in vertical f alinement with said stop "finger when said quantity stops are held out of; vertical alinement with said stop'finger so that said discharge pipe may have a free and unobstructed movement from its lowermost its uppermost position. I I

27 In'dispensingapparatus, thecombinas I 7 tion with a measuring vessel, of an adjustable. discharge pipe extending into said vessel,

position to i means comprisinga vertically movable bar for adjusting the height of said discharge pipe, a stopfinger secured to said bar and movable up and down therewith, a series of quantity stops, a vertical pivoted rod for carrying said quantity stops, means for turning said rod to shift one of said quantity stops to a position below and in vertical alinement with said stop finger, a stop plate secured to the lower portion of said rod, a vertical guideway registering with a slot in the periphery of said stop plate in position to receive said finger when said rod is turned to a predetermined position, and a drain valve operable to open position only when said stop finger moves into said slot.

28. In dispensing apparatus, the combination with a measuring vessel, of a discharge pipe mounted therein for adjustment in elevation, means comprising a vertical bar for adjusting the elevation of said pipe, a stop finger on said bar, means comprising a series of stops to co-operate with said stop finger to predetermine the position of said pipe, locking mechanism adapted to co-operate with said stop finger for preventing movement of said quantity stops when said pipe is in its lowermost position, and a drain valve operable to open position only when said pipe is in its lowermost position and said quantity stops are locked against movement. y

In testimony whereof I have signed my name to this specification on this 7th day of April, A. D. 1926.

LEE R. HARTLEY, 

